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Gelatin-based food packaging film and preparation method thereof

A food packaging film and gelatin-based technology, applied in the field of packaging materials, can solve the problems of irreplaceable, gelatin-based film materials with low thermal stability and physical and mechanical properties, achieve excellent physical and mechanical properties, and facilitate large-scale industrial production , easy-to-control effects

Active Publication Date: 2020-04-28
SHANTOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it must be noted that simply using polyflavanol as a crosslinking agent, the thermal stability and physical and mechanical properties of gelatin-based film materials are still low, and cannot completely replace traditional plastic packaging.

Method used

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  • Gelatin-based food packaging film and preparation method thereof
  • Gelatin-based food packaging film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A preparation method of a gelatin-based food packaging film, which comprises the following processing steps:

[0021] 1) Mix and soak 16 parts of gelatin and 100 parts of distilled water according to the mass parts of raw materials for 1 hour, raise the temperature to 50°C and let stand for 30 minutes to obtain a gelatin matrix;

[0022] 2) 20 parts of Ti with a concentration of 4g / L 2 (SO 4 ) 3 Add the aqueous solution to the gelatin matrix, stir for 20min, then add 20 parts of high-polymerization degree flavanol aqueous solution with a concentration of 0.8g / L, stir for 10min, then add 5 parts of sodium hydroxide aqueous solution with a concentration of 0.16mol / L and 5 Parts of glycerin were cast into a film, and dried at 50°C for 12 hours to obtain the finished product of Example 1.

Embodiment 2

[0024] A preparation method of a gelatin-based food packaging film, which comprises the following processing steps:

[0025] 1) Mix and soak 25 parts of gelatin and 100 parts of distilled water according to the mass parts of raw materials for 1 hour, raise the temperature to 50°C and let stand for 30 minutes to obtain a gelatin matrix;

[0026] 2) 20 parts of TiO with a concentration of 3g / L 2 Add the aqueous solution to the gelatin matrix, stir for 20min, then add 15 parts of high-polymerization degree flavanol aqueous solution with a concentration of 0.6g / L, stir for 10min, then add 5 parts of sodium hydroxide aqueous solution with a concentration of 0.1mol / L and 5 Parts of glycerin were cast into a film, and dried at 50°C for 12 hours to obtain the finished product of Example 2.

Embodiment 3

[0028] A preparation method of a gelatin-based food packaging film, which comprises the following processing steps:

[0029] 1) Mix and soak 20 parts of gelatin and 100 parts of distilled water according to the mass parts of raw materials for 1.5 hours, raise the temperature to 50°C and let stand for 40 minutes to obtain a gelatin matrix;

[0030] 2) 25 parts of Ti with a concentration of 6g / L 2 (SO 4 ) 3 Add the aqueous solution to the gelatin matrix, stir for 10 minutes, then add 20 parts of high-polymerization degree flavanol aqueous solution with a concentration of 0.5 g / L, stir for 15 minutes, then add 6 parts of sodium hydroxide aqueous solution with a concentration of 1.2 mol / L and 3 Parts of glycerin were cast into a film, and dried at 60°C for 10 hours to obtain the finished product of Example 3.

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Abstract

The invention discloses a preparation method of a gelatin-based food packaging film, which comprises the following steps: 1) mixing and soaking 16-30 parts by mass of gelatin and 100 parts by mass ofdistilled water for 0.5-1.5 hours to obtain a gelatin matrix; 2) adding 15-25 parts of a titanium compound aqueous solution with the concentration of 3-10g / L into the gelatin matrix; and adding 15-25parts of 0.5-2g / L high-polymerization-degree flavanol aqueous solution, adding 3-6 parts of 0.1-1.2 mol / L sodium hydroxide aqueous solution and 3-6 parts of glycerol, casting to form a film, and drying to obtain the finished product. According to the preparation method, natural polyflavanol and high-safety titanium ions are used as composite cross-linking agents, and the high-safety gelatin-basedfood packaging film with excellent physical and mechanical properties is prepared by utilizing a principle that protein reaction active sites are increased after the titanium ions and the polyflavanolform a coordination compound.

Description

technical field [0001] The invention relates to the field of packaging materials, in particular to a food packaging film and a preparation method thereof. Background technique [0002] Animal skin contains a large amount of collagen protein (the content reaches more than 80%), which is a high-quality raw material for gelatin production. Since the gelatin molecule itself has the structural characteristics of a long-chain macromolecule, and at the same time retains part of the triple helical structure, the film material prepared with gelatin as the matrix can often show better formability, tensile strength, and elongation at break. and other physical and mechanical properties (Etxabide A., Uranga J., Guerrero P., et al.. Development of active gelatin films by means of valorisation of food processing waste: A review. Food Hydrocolloids, 2017, 68:192-198; Li Xue, He Zhifei, Li Hongjun. Research progress on the application of edible film in the preservation and storage of meat a...

Claims

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Application Information

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IPC IPC(8): C08L89/00C08K5/053C08J5/18C08J3/24B65D65/38
CPCB65D65/38C08J3/24C08J5/18C08J2389/00C08K5/053
Inventor 滕博刘杨张清刘晓君林悦戴明辉陈成龙陈启煊刘一洲刘嘉曼
Owner SHANTOU UNIV
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